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refactor: finish constraint builder and its testbench

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yyc12345
2025-06-30 09:33:46 +08:00
parent 3030a67ca3
commit 732a560a65
2 changed files with 121 additions and 14 deletions
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55
src/yycc/constraint/builder.hpp
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@ -34,32 +34,61 @@ namespace yycc::constraint::builder {
* @brief Get constraint for enum values by enumerating all possible values.
* @tparam T An enum type (except bool) of underlying stored value.
* @param[in] il An initializer list storing all possible values.
* @param[in] default_index The index of default value in given list.
* @return The generated constraint instance which can be directly applied.
*/
template<typename T, std::enable_if_t<std::is_enum_v<T>, int> = 0>
Constraint<T> enum_constraint(const std::initializer_list<T>& il) {
std::set<T> data(il);
Constraint<T> enum_constraint(const std::initializer_list<T>& il, size_t default_index = 0u) {
if (default_index >= il.size())
throw std::invalid_argument("the default index must be a valid index in given list");
auto fn_check = [data](const T& val) -> bool { return data.find(val) != data.end(); };
return Constraint<T>(std::move(fn_check), nullptr);
T default_entry = il.begin()[default_index];
std::set<T> entries(il);
// TODO: modify it as `contain` once we finish patch namespace.
auto fn_check = [entries](const T& val) -> bool {
return entries.find(val) != entries.end();
};
auto fn_clamp = [entries, default_entry](const T& val) -> T {
if (entries.find(val) != entries.end()) {
return val;
} else {
return default_entry;
}
};
return Constraint<T>(std::move(fn_check), fn_clamp);
}
/**
* @brief Get constraint for string values by enumerating all possible values.
* @param[in] il An initializer list storing all possible values.
* @param[in] default_index The index of default value in given list.
* @return The generated constraint instance which can be directly applied.
* @remarks
* Caller must make sure that the string view passed in initializer list is valid until this Constraint life time gone.
* Becasue this generator will not copy your given string view into string.
*/
inline Constraint<NS_YYCC_STRING::u8string> GetStringEnumerationConstraint(
const std::initializer_list<NS_YYCC_STRING::u8string_view>& il) {
std::set<NS_YYCC_STRING::u8string_view> data(il);
inline Constraint<NS_YYCC_STRING::u8string> strenum_constraint(
const std::initializer_list<NS_YYCC_STRING::u8string_view>& il, size_t default_index = 0u) {
if (default_index >= il.size())
throw std::invalid_argument("the default index must be a valid index in given list");
auto fn_check = [data](const NS_YYCC_STRING::u8string& val) -> bool {
return data.find(NS_YYCC_STRING::u8string_view(val)) != data.end();
NS_YYCC_STRING::u8string default_entry = NS_YYCC_STRING::u8string(il.begin()[default_index]);
std::set<NS_YYCC_STRING::u8string> entries;
for (const auto& i : il) {
entries.emplace(i);
}
// TODO: modify it as `contain` once we finish patch namespace.
auto fn_check = [entries](const NS_YYCC_STRING::u8string& val) -> bool {
return entries.find(val) != entries.end();
};
return Constraint<NS_YYCC_STRING::u8string>(std::move(fn_check), nullptr);
auto fn_clamp = [entries, default_entry](
const NS_YYCC_STRING::u8string& val) -> NS_YYCC_STRING::u8string {
if (entries.find(val) != entries.end()) {
return val;
} else {
return default_entry;
}
};
return Constraint<NS_YYCC_STRING::u8string>(std::move(fn_check), fn_clamp);
}
} // namespace yycc::constraint::builder